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Unread 23-02-2006, 00:05
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Al Skierkiewicz Al Skierkiewicz is offline
Broadcast Eng/Chief Robot Inspector
AKA: Big Al WFFA 2005
FRC #0111 (WildStang)
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Re: pot sensor selection

Quote:
Originally Posted by wkethman
does anyone recommend a pot sensor that i can use for a control module to know the exact position of a smaller control to control the robot. i saw it done a few years back where they have a small mockup of their bot and whenever itw as moved the real bot moved accordingly and i want to apply it to a testing module for another project. thanks guys
Take a look at the second link above. That page has a variety of pots but I would stick with those that have a 1/4" shaft diameter with a long shaft If you are using it for operator control you will want some method of supporting the shaft so that a overzealous operator doesn't bend it into a modern object d' art. Stay away from mutliturn pots or those with screw driver shafts. You need 100K for the OI interface wired as shown in the OI manual. The OI monitors the it's inputs and if it believes a joystick has become unplugged it sends a PWM 127 to the appropriate RC channel. Similar pots are available from Mouser and some are available at Radio Shack. Be advised that not all stores keep the same stock in the store.
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Al
WB9UVJ
www.wildstang.org
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Storming the Tower since 1996.